[Clas_cascades] Fwd: mc recon problems fixed, gsim updated

Zhiwen Zhao zwzhao at jlab.org
Thu Apr 8 21:30:48 EDT 2010


Hi, Paul

The current production version of gsim is good enough, right?

The "set st_type" and "set photon_trig_type" are not even set in my 
gsim_cook.tcl (refer to the eg3_sim package).
Should we set them for eg3?

eg3 has the calib_user.RunIndexEG3Sim as correct runindex, should we use 
"set st_type 2" to make the new ST works?

I think we need to check our simulation settings together during our 
meeting to make sure everything is correct.

Zhiwen

On 4/8/2010 10:16 AM, Paul Mattione wrote:

Hopefully this answers your question about the tcl file.
>
>  - Paul
>
>
>
>
> Begin forwarded message:
>
> *From: *Paul Mattione <pmatt at jlab.org <mailto:pmatt at jlab.org>>
> *Date: *August 17, 2009 12:52:17 PM EDT
> *To: *clas_offline at jlab.org <mailto:clas_offline at jlab.org>
> *Subject: **mc recon problems fixed, gsim updated*
>
> Thanks to all of the help I received (especially from Franz Klein and 
> Eugene Pasyuk), my monte carlo reconstruction is now working!  For 
> photon runs after g11, you must do the following:
>
> - check out and compile the new version of gsim
> - in your tcl file for user_ana, include "set st_type 1" and "set 
> photon_trig_type 1"
>
> The gsim package needs to be recompiled because the geometry code for 
> the long photon target (40cm) and new ST (STTYPE 1) wasn't correct, in 
> particular for other target positions than -10cm, because some 
> position information was hard-coded in gsim (updated gsim/geom_tg.F, 
> gsim/geom_phtg8.F). In addition, there were missing offsets for the 
> hit banks of the start counter, causing the STN TDC value to be wrong 
> for tracks with vertex <-20cm (gsim/sets_stnew.F).
>
> Also, the C++ code for new ST reconstruction (set st_type 2 in 
> user_ana tcl file) doesn't work for monte carlo data unless you copy 
> all database geometry values for your experiment into run #1, along 
> with tweaking st2tof as necessary to line things up.
>
> Thanks again everybody for all of the help!
>
> - Paul
>
>

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